a reverse queef is where you blowair into your moms vagina and then cup your mouth around the hole, she queefs into your mouth, you close your lips and blow it back into her mouth.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.